JPH08268227A - Discrimination device for vehicle - Google Patents

Abstract

PURPOSE: To provide a discrimination device for a vehicle capable of transmitting and receiving a signal even when an antenna and a responding means are comparatively separated from each other. CONSTITUTION: A supplying and receiving circuit 3 provided on a vehicle transmits a high frequency signal through an antenna 5. A responding means 6 carried by an operator replies an proper identification code to the responding means 6 by induced electromotive force by the high frequency signal. The supplying and receiving circuit 3 receives a discrimination code through the antenna 5. A control circuit 4 judges whether the discrimination code to receive and the discrimination code proper to a vehicle coincide with each other or not and prohibits traveling of the vehicle when they do not coincide with. The antenna 5 can be formed comparatively large, and it is provided, for example, on a sunvisor, a room mirror, a steering wheel, a windshield or a shift lever, and consequently, even when the antenna 5 and the responding means 6 are arranged comparatively separated from each other, it is possible to transmit and receive the signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle identification device used to prevent theft of a vehicle, and in particular, an antenna is provided on the vehicle side to communicate an identification signal with a response means carried by an operator. Thus, the present invention relates to a vehicle identification device that can identify an operator.

[0002]

2. Description of the Related Art A vehicle key device for preventing theft of a vehicle due to unauthorized unlocking is disclosed in Japanese Examined Patent Publication No. 4-141141. FIG. 18 is a cross-sectional view showing the configuration of the vehicle key device disclosed in the above publication. Also in FIG.
FIG. 4 is a perspective view showing a configuration of an annular core 207 included in the vehicle key device. Further, FIG. 20 is a block diagram showing an electrical configuration of the vehicle key device.

Referring to FIG. 18, a key insertion hole 202 is formed in the lock 201, and an annular rotor case 203 is fixed to the entrance side of the key insertion hole 202 of the lock 201. A cylindrical rotor 204 is rotatably mounted inside the rotor case 203. A key insertion hole 205 that communicates with the key insertion hole 202 is formed in the rotor 204. The key insertion hole 205 is formed so that the distal end side 206a of the flat key 206 can be inserted. Further, an annular core 207 is arranged on the outer peripheral portion of the rotor 204 as shown in FIG. One end 207a of this annular core 207 is formed in a tapered shape and is exposed at the entrance end of the key insertion hole 205. The annular core 207 includes rotor coils 208, 2
09 is wound in the same direction. That is, so that the magnetic fluxes generated by the rotor coils 208 and 209 cancel each other,
Rotor coils 208 and 209 are wound around the annular core 207 so as to face each other. Each rotor coil 208, 20
9 is connected to the frequency variable oscillator 211 via the resistor 210 as shown in FIG.

The variable frequency oscillator 211 includes a rotor coil 20 based on an instruction from the microcomputer 212.
A signal for information detection is supplied to 8,209. That is,
The variable frequency oscillator 211 functions as a signal generating means. The rotor coils 208 and 209 include an amplifier 213, a diode 214, a capacitor 215 and an A coil.
It is connected to the microcomputer 212 via a / D (analog / digital) converter 216. Information of signals received by the rotor coils 208 and 209 is detected as a voltage drop of the resistor 210, and the detected output is the amplifier 21.
3, via the diode 214 and the A / D converter 216, to the microcomputer 212. That is, the resistor 210, the amplifier 213, the diode 214 and the A / D converter 216 are connected to the rotor coils 208 and 209.
It functions as a signal detecting means for detecting the signal transmitted to the. The microcomputer 212 as the control means,
The drive of the engine drive unit is controlled based on the information from the A / D converter 216. That is, the A / D converter 216
The information based on the signal from (1) is compared with the determination information stored in the ROM in advance, and the engine drive permission signal is output to the engine drive unit only when the contents of the two match.

Further, the tip portion 206c of the grip 206b of the key 206 is formed in a tapered shape which can be engaged with the tapered surface of the annular core 207. A shaft-shaped core 217 is mounted in the middle of the tip portion 206c. This axial core 21
When the key 206 is inserted into the key insertion hole 205, the key 7 comes into contact with the annular core 207 at two places to form a set of magnetic circuits. A key coil 218, which is magnetically coupled to the rotor coils 208 and 209 when the key 206 is inserted into the key insertion hole 205, is wound around the shaft-shaped core 217. The key coil 218 is connected to the coil L1 forming the resonance circuit and the capacitor C1 and also forms the resonance circuit.
It is connected to the capacitor C2. The capacitances of the coils L1 and L2 and the capacitors C1 and C2 are determined so that the resonance frequencies of the respective resonance circuits are different from each other. Variable frequency oscillator 21
A signal for information detection is supplied from 1 to the rotor coils 208 and 209, and a voltage is induced in the key coil 218.
The coils L1 and L2 and the capacitors C1 and C2 function as an information generating unit that causes the key coil 218 to generate a signal containing specific information in response to the voltage induced in the key coil 218. When the generated signal is supplied to the microcomputer 212 via the amplifier 213, the diode 214, and the A / D converter 216, these pieces of information are sequentially read by the microcomputer 212 and compared with the judgment information. If the engine drive permission signal is output only when the information based on the received signal matches the determination information, the engine can be driven only when the predetermined key 206 is inserted into the key insertion hole 205. be able to. As a result, the engine can be driven only when the specific key 206 is inserted into the key insertion hole 205, and the vehicle can be prevented from being stolen due to unauthorized unlocking.

[0006]

As described above, the key 2 is used.
When the shaft core 217 wound with the key coil 218 and the annular core 207 wound with the rotor coils 208, 209 are respectively provided on the lock pad 06 into which the key 206 is inserted, the rotor coils 208, 209. Is installed in a relatively narrow space, the rotor coils 208, 2
09 has a small number of turns, and therefore the rotor coils 208, 2
The magnetic field generated at 09 becomes smaller. When the coil is provided on the key 206 and the lock 201 as described above, the key 2
Since the signal is transmitted when 06 is inserted into the key insertion hole 205 of the lock 201, the signal transmission distance is relatively short. In such a case, since the signal transmission distance is short even if the magnetic field is small, it is possible to reliably transmit the signal, and thus it is possible to judge whether or not the inserted key is a predetermined key. The operator can be identified.

On the other hand, the key coil 218 provided in the key 206 is wound around the shaft-shaped core 217, and the information generating means composed of the coils L1 and L2 and the capacitors C1 and C2 is embedded in something other than the key 206. For example, it can be embedded in a card-shaped member such as an IC card or a driver's license, or can be embedded in a wristwatch or the like. However, what is embedded is assumed to be carried by the operator when the vehicle is used. In such a case, the transmission distance of the signal becomes longer than that in the case described above, so that the magnetic field is small and it becomes impossible to reliably transmit the signal. Therefore, the operator cannot be identified, and the vehicle cannot be driven even though the operator wants to drive the vehicle.

At the entrance side of the key insertion hole 202 of the lock 201, an accessory rotor case 203 or rotor 2 is provided.
04 is provided, and the operator can confirm various key operations by the characters or symbols printed on the rotor case 203. The rotor coils 208 and 209 are formed around the rotor case 203 and the rotor 204.
An annular core 207 around which is wound is arranged. Annular core 2
07 is preferably arranged at the entrance side of the key insertion hole 202 for transmitting and receiving signals, but when arranged in this way,
The coil part is exposed and the appearance is impaired.

An object of the present invention is to provide a vehicle identification device which can reliably transmit and receive a signal between an antenna provided on the vehicle side and a response means carried by an operator.

[0010]

According to the present invention, the supply means provided on the vehicle side transmits a high frequency signal, and the response means carried by the operator is unique to the response means by the induced electromotive force due to the high frequency signal. In the vehicle identification device, which returns the identification code, compares the identification code received by the receiving means on the vehicle side with the identification code unique to the vehicle, and prohibits the traveling of the vehicle when the two do not match, In the vehicle identification device, an antenna for transmitting the high frequency signal and receiving the identification code is provided in a sun visor. Further, according to the present invention, the supply means provided on the vehicle side transmits a high frequency signal, and the response means carried by the operator returns an identification code unique to the response means by the induced electromotive force by the high frequency signal. In the vehicle identification device, the receiving means receives the identification code, compares it with the identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. The vehicle identification device is characterized in that an antenna for receiving is provided in a rearview mirror. Furthermore, according to the present invention, the supply means provided on the vehicle side transmits a high frequency signal, and the response means carried by the operator returns an identification code unique to the response means by the induced electromotive force due to the high frequency signal. In the vehicle identification device, the receiving means on the side receives the identification code, compares the identification code with the identification code unique to the vehicle, and prohibits the vehicle from traveling when the two do not match. In the vehicle identification device, an antenna for receiving a code is provided on a steered wheel. Further, according to the present invention, the supply means provided on the vehicle side transmits a high frequency signal, and the response means carried by the operator returns an identification code unique to the response means by the induced electromotive force by the high frequency signal. In the vehicle identification device, the receiving means receives the identification code, compares it with the identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. The vehicle identification device is characterized in that an antenna for receiving is provided on the windshield. Furthermore, according to the present invention, the supply means provided on the vehicle side transmits a high frequency signal, and the response means carried by the operator returns an identification code unique to the response means by the induced electromotive force due to the high frequency signal. In the vehicle identification device, the receiving means on the side receives the identification code, compares the identification code with the identification code unique to the vehicle, and prohibits the vehicle from traveling when the two do not match. In the vehicle identification device, a shift lever is provided with an antenna for receiving a code. The present invention also provides
The supply means provided on the vehicle side transmits a high-frequency signal, the response means carried by the operator returns an identification code unique to the response means by the induced electromotive force due to the high-frequency signal, and the reception means on the vehicle side performs the above-mentioned operation. In a vehicle identification device that receives an identification code and compares it with an identification code unique to the vehicle, and prohibits the vehicle from traveling when the two do not match, the supply means and the receiving means are integrated into a housing. And a ring-shaped coil that acts as the antenna facing the insertion hole and that allows the response means to be attached / detached to / from the insertion hole formed in the housing, and the housing is exposed at least the insertion hole. The vehicle identification device is characterized by being attached to the instrument panel in such a manner.

[0011]

According to the present invention, the vehicle is provided with the supplying means and the receiving means, and the operator carries the response means. When the supply unit transmits the high frequency signal, the response unit returns an identification code unique to the response unit by the induced electromotive force generated by the high frequency signal. The receiving means receives the identification code, compares the received identification code with the identification code unique to the vehicle, and when the two identification codes do not match, outputs a prohibition signal to, for example, the control device of the internal combustion engine. Prohibit driving the vehicle. In such a vehicle identification device, an antenna for transmitting the high-frequency signal and receiving the identification code is provided in a sun visor (a shade plate) facing the operator.

Therefore, as compared with the case where the antenna is provided in front of the lock of the key as in the prior art, the antenna can be made relatively large. Therefore, even when the operator carries the card-shaped response means by inserting it into the operator's own chest pocket or the like, or by embedding the response means in the wristwatch and carrying it as described above. It is possible to identify the operator. That is, with the large-sized antenna, the identification code responsive to the transmitted high-frequency signal can be reliably received even when the antenna and the response unit are arranged relatively distant from each other.

Further, according to the invention, the antenna may be provided on a room mirror facing the operator,
It may be provided on the steering wheel (handle), may be provided on the windshield, or may be provided on the shift lever. All of these can perform transmission of high frequency signals and reception of identification codes by the same operation as described above.

Furthermore, according to the present invention, the supply means and the reception means provided in the vehicle are integrally housed in the housing. The response means is attachable / detachable to / from the insertion hole formed in the housing, and an annular coil that faces the insertion hole and acts as the antenna is provided. Such a housing is attached to an instrument panel of a vehicle so that at least the insertion hole is exposed.

As described above, since the annular coil is provided in the housing that houses the supplying means and the receiving means, and the housing is attached to the instrument panel, the coil portion is smaller than in the case where the annular coil is provided in the key cylinder. The coil can be miniaturized and the coil portion is not exposed, so that the appearance is improved.

[0016]

1 is a block diagram for explaining the operating principle of a vehicle identification device 1 according to the present invention. The vehicle identification device 1 is configured to include a supply / reception circuit 3, a control circuit 4 and an antenna 5 provided in the vehicle 2, and a response means 6 carried by an operator.

The supply / reception circuit 3 is drive-controlled by the control circuit 4, detects the opening and closing of the door, for example, by detection means (not shown), and a high frequency from the antenna 5 realized by an annular coil for a predetermined time from the detection time. Send a signal. A capacitor C is placed between both terminals of the antenna 5.
3 is provided. When the antenna 8 of the response means 6 receives the high frequency signal, that is, when a voltage higher than a predetermined value is induced by the high frequency signal in the antenna 8 realized by a coil, the response means 6 is stored in the memory 7 in advance. The identification code unique to the response means 6 is read out, and the read identification code is returned from the antenna 8.
A capacitor C4 for storing electricity is provided between both terminals of the antenna 8. The supply / reception circuit 3 receives the identification code via the antenna 5. The control circuit 4 compares the received identification code with the identification code unique to the vehicle to determine whether they match. When the two do not match, the control circuit 4 operates to prohibit the traveling of the vehicle by, for example, outputting a prohibition signal for prohibiting the operation of the internal combustion engine to the internal combustion engine control device.

FIG. 2 is a perspective view showing the interior of the vehicle body, and FIG. 3 is a perspective view showing the appearance of the vehicle 2. According to the present invention, in the vehicle identification device 1 which operates as described above, the antenna 5 to be attached to the vehicle 2 is the sun visor 11,
It is characterized in that it is provided on the rearview mirror 12, the windshields 13, 14, the steering wheel (steering wheel) 15 or the shift lever 16. An example in which the antenna 5 is provided on each member will be described below.

FIG. 4 is a perspective view showing a sun visor 11 having an antenna wire 22 acting as the antenna 5 according to the first embodiment of the present invention. Sun visor 11
The sun visor main body 21, the antenna wire 22, the covering member 23, and the supporting member 24 are included. As shown in FIG. 4, on one surface of the sun visor body 21, an antenna wire 22 made of a conductive material such as metal is spirally arranged. The antenna wire 22 may be arranged in any shape, such as a circle or a triangle, as long as it is annular and has a constant winding direction. For example, as shown in the drawing, the antenna wire 22 may be arranged along the peripheral edge of the substantially rectangular sun visor body 21. The wiring is provided so as not to contact each other.

The sun visor body 21 having such an antenna wire 22 is covered with a covering member 23. Covering member 2
The sun visor body 21 covered with 3 is a rod-shaped support member 2
4 and a pivot 25, the support member 24 is attached to the vehicle body, the pivot 25 is fitted in a holder provided in the vehicle body, and is swingable in the arrow 26 direction.
When the pivot 25 is removed from the holder, the arrow 2
It can swing in 7 directions. Here, the antenna wire 22
Both end portions 22a of the are guided through the rod-shaped support member 24 and are connected to the supply / reception circuit 3.

FIG. 5 is a second embodiment of the present invention and is an exploded perspective view showing a rearview mirror 12 having an antenna wire 33 acting as the antenna wire 5. The rearview mirror 12 includes a mirror body 31, a frame 32, and an antenna wire 33. The frame 32 has a window 32a in which the mirror body 31 is attached. In the frame 32, an antenna wire 33 made of a conductive material such as metal is arranged along the peripheral edge of the frame 32. Frame 3
A projecting portion 32b used for attaching the frame 32 to a vehicle is formed on the frame 2, and both end portions 33a of the antenna wire 33 are guided along the projecting portion 32b and the supply / reception circuit 3 is formed. Connected to.

FIG. 6 is a perspective view showing a third embodiment of the present invention and showing windshields 13 and 14 having antenna wires 41 and 42 acting as the antenna 5. Also,
FIG. 7 is a front view showing the glass body 43 on which the antenna wires 41 and 42 are formed. Further, FIG. 8 is a cross-sectional view showing the glass body 43 in which the antenna wires 41 and 42 are formed. The windshields 13 and 14 both have the antenna wires 41 and 42 made of, for example, a transparent conductive material provided on the surface of one glass body 43a, and then cover the surface of the other glass body 43b. It is realized by stacking. One windshield 13 is attached to the front surface of the vehicle, and the other windshield 14 is attached to the side surface of the vehicle on the side closer to the operator, and only one of them may be used.

The antenna wires 41 and 42 can be provided by attaching a sheet body made of a resin having a light-transmitting property, in which the antenna wires 41 and 42 are embedded, to the glass body.

FIG. 9 is a front view showing a handle 15 having an antenna wire 54 acting as the antenna 5 according to a fourth embodiment of the present invention. The handle 15 includes a steering wheel ring 51, a steering wheel boss 52, a steering wheel spoke 53, and an antenna wire 54. Inside the steering wheel ring 51, an antenna wire 54 made of a conductive material such as metal is arranged. Both ends 54a of the antenna wire 54 are guided to the steering wheel boss 52 and connected to the supply / reception circuit 3. Although the winding diameter is small, it is possible to dispose the antenna wire 54 in the steering wheel boss 52.

FIG. 10 shows a fifth embodiment of the present invention and is a perspective view showing a shift lever 16 having an antenna wire 63 acting as the antenna 5. Shift lever 16
Includes a support member 62 and a shift knob 61 attached to one end of the support member 62. The operator holds the shift knob 61 and moves the shift lever 16 in a predetermined direction indicated by an arrow 64. As a result, the gear shift operation of the transmission can be performed.

An antenna wire 63 made of a conductive material such as metal is provided inside the shift knob 61 and the support member 62.
Is arranged. A coil-shaped antenna wire 63 is arranged on the shift knob 61, and both ends 63a of the antenna wire 63 are arranged.
Is guided to the support member 62 and connected to the supply / reception circuit 3. The pointing direction of the antenna wire 63 indicated by reference numeral 66 is tilted by an angle θ with respect to the vertical direction 65, and is the direction of the operator.

FIG. 11 is a block diagram showing an electrical configuration of a vehicle control device 101 in a vehicle in which the vehicle-mounted identification device 1 of the present invention is used. This vehicle control device 101 is
Equipped with a vehicle anti-theft function. The vehicle control device 101 is
Generally, an internal combustion engine control unit 1 that controls the internal combustion engine 102
03, the internal combustion engine control unit 103, and the radio receiver 12
0 and the starter motor 119 for controlling the power supply 1
04 and 04 are included.

Constant voltage circuits 142 and 123 are provided in the respective control units 103 and 104, and when the ignition key switch is connected to the IG contact or the ST contact to the constant voltage circuit 142, the power from the battery 143 is supplied. Is continuously supplied to the constant voltage circuit 123, and the constant voltage circuit 123 is constantly supplied with electric power from the battery 143.
Each circuit in 3,104 is energized.

The internal combustion engine control unit 103 generally has
Internal combustion engine 102 detected by intake pressure detector 105
The fuel injection amount and the ignition timing are calculated based on the intake pressure and the rotation speed of the internal combustion engine 102 detected by the crank angle detector 106, and the fuel injection valve 107 and the igniter 141 are driven. The internal combustion engine control unit 103
Input interface circuits 108-111 and analog /
A digital converter 112, a processing circuit 113 realized by a microcomputer, a memory 114 realized by an erasable and rewritable so-called EEPROM, an output interface circuit 115 and the like are included.

The output from the intake pressure detector 105 is converted into a digital value by the analog / digital converter 112 and read into the processing circuit 113. Further, the crank pulse from the crank angle detector 106 is waveform-shaped by the input interface circuit 109, and then the processing circuit 113.
Is input to The input interface circuit 108 is provided to receive a signal from the power supply control unit 104.

The outputs from the neutral switch 116 and the start detector 117 are waveform-shaped by the input interface circuits 110 and 111, respectively, and input to the processing circuit 113. Neutral switch 11
6 is conducted when the gear stage of the automatic transmission is in the parking or neutral position. Also the start detector 117
Detects that the ignition key switch is electrically connected to the start contact ST.

The processing circuit 113 refers to the map data and the like stored in the memory 114 based on the detection results of the neutral switch 116 and the detectors 105, 106, 117 and the like, and the fuel injection amount and the ignition timing. And the like, and controls the valve opening time of the fuel injection valve 107 via the output interface circuit 115 realized by a power transistor and the like, and the ignition timing and ignition time of the ignition plug 118 via the igniter 141. To control.

The power supply control unit 104 performs an operation described later in response to the insertion of the key 122 into the key hole 121 of the ignition key cylinder and the angular displacement operation thereof.

The power control unit 104 includes a constant voltage circuit 123.
An insertion detector 124, detectors 125 to 127, input interface circuits 128 to 131, and a processing circuit 13.
2, output interface circuits 133 and 134, and a memory 135. Insertion detector 124
Detects the insertion of the key 122 into the key hole 121, and the accessory detector 125 detects that the key 122 is angularly displaced and
The ignition detector 126 detects whether or not the key 122 is set to the IG position, and the start detector 127 detects whether or not the key 122 is set to the cc position.
Is set to the ST position. The detection results of the insertion detector 124 and the detectors 125 to 127 are
It is input to the processing circuit 132 via the input interface circuits 128 to 131, respectively. In response to the detection results of the detectors 125 to 127, the processing circuit 132 energizes the radio receiver 120, the internal combustion engine control unit 103, and the starter motor 119 via the output interface circuit 133 as described later. To do.

The oscillation / detection circuit 136 corresponding to the supply / reception circuit 3 in FIG. 1 has an antenna wire 22 provided in the sun visor 11 as described in the first embodiment, for example.
A high frequency signal whose frequency has been scanned is applied to the coil 137 acting as a signal, and the identification code from the transponder 138 corresponding to the response means 6 in response to this high frequency signal is received. The identification code received by the oscillation / detection circuit 136 is
It is input to the processing circuit 132 corresponding to the control circuit 4.

The transponder 138 has a coil 139 acting as the antenna 8, and the coil 13
Both terminals 9 are connected to a memory 140 that stores an identification code unique to the transponder 138.

Therefore, for example, when the insertion detector 124 detects that the key 122 has been inserted into the key hole 121, the oscillation / detection circuit 136 gives the coil 137 a high-frequency signal whose frequency has been scanned, and this high-frequency signal. In response to the identification code from the transponder 138.

The processing circuit 132 responds to the detection results of the detectors 125 to 127 in response to the detection result of each of the detectors 125 to 127 while the identification code thus detected and the identification code stored in the memory 135 match. The machine 120, the internal combustion engine controller 103, and the starter motor 119 are driven.

That is, the key 122 is angularly displaced and Ac
When in the c position, the radio receiver 120 is energized, when in the IG position, the radio receiver 120 and the internal combustion engine control unit 103 are energized, and when in the ST position, the radio receiver 120 is energized. The energization is stopped and the internal combustion engine control unit 103 and the starter motor 119 are energized.

On the other hand, when the detected identification code and the identification code stored in the memory 135 do not match, the processing circuit 132 controls the internal combustion engine control section 103 so as to prohibit the traveling of the vehicle. .

As described above, according to the first to fifth embodiments, the antenna 5 provided on the vehicle of the vehicle identification device 1 can be formed to be relatively large. Therefore,
High-frequency signal is transmitted by the large antenna 5,
It becomes possible to receive the identification code from the response means 6 in response to the high frequency signal, and the response means 6 is made into a card shape, and the response means 6 is stored in an operator's own breast pocket or the like and carried or responded. It becomes possible to embed the means 6 in a wristwatch and carry it. In particular, as described in the fifth embodiment, it is preferable to provide the shift lever 16 with the antenna 5 because the antenna 5 and the response means 6 are relatively close to each other when the response means 6 is embedded in a wristwatch.

FIG. 12 shows a sixth embodiment of the present invention and is a perspective view showing a housing 71 accommodating the supply / reception circuit 3. Further, FIG. 13 is a block diagram showing the housing 71 and the response means 6 which can be attached to and detached from the housing 71. The housing 71 accommodates the supply / reception circuit 3 and the control circuit 4. An insertion hole 71a is formed in the housing 71, and the response means 6 can be inserted into and removed from the insertion hole 71a. The antenna 5 faces the insertion hole 71a.
An annular coil 72 is provided which acts as. For example, it is wound around the side surface of the insertion hole 71a.

FIG. 14 shows a seventh embodiment of the present invention and is a perspective view showing a housing 73 which houses the supply / reception circuit 3. Further, FIG. 15 is a block diagram showing the housing 73 and the response means 6 which can be attached to and detached from the housing 73. The housing 73 accommodates the supply / reception circuit 3 and the control circuit 4. An insertion hole 73a is formed in the housing 73, and the response means 6 can be attached / detached to / from the insertion hole 73a. An antenna module 74 is provided which faces the insertion hole 73a and acts as the antenna 5. For example, the surface of the flat antenna module 74 is provided so as to be perpendicular to the insertion direction of the insertion hole 73.

FIG. 16 is a sectional view showing a mounting state of the housing 71. The housing 71 is provided at least in the insertion hole 7 in the instrument panel 17 of the vehicle shown in FIG.
It is attached so that 1a is exposed. A decorative plate 75 is provided between the instrument panel 17 and the housing 71.
Is provided. On the surface of the decorative plate 75, for example, characters or symbols indicating the mounting position of the response unit 6 are printed. The housing 73 is also attached to the instrument panel 17 in the same manner.

FIG. 17 is a plan view showing the structure of the antenna module 74. The antenna module 74 is
Four antenna module members 76 to 79 shown in FIGS. 17 (1) to 17 (4) are laminated in this order to form a structure as shown in FIG. 17 (5). The antenna module member 76 has, for example, an antenna wire 80 arranged in a counterclockwise spiral shape, and an outer end portion 80a of the antenna wire 80 is drawn out as one terminal 74a of the antenna module 74. The antenna module member 77 has, for example, an antenna wire 81 arranged in a clockwise spiral shape. The antenna module member 78 has, for example, an antenna wire 82 arranged in a counterclockwise spiral shape. The antenna module member 79 is
For example, the antenna wire 83 has a clockwise spirally arranged antenna wire 83, and the outer end portion 83a of the antenna wire 83 is drawn out as the other terminal 74b of the antenna module 74. The antenna module 74 is created by stacking the antenna module members 76 to 79 in this order. At this time, the center side end portion 80 of the antenna wire 80 of the antenna module member 76
b, the center side end 81b of the antenna wire 81 of the antenna module member 77, the outer end 81a of the antenna wire 81 of the antenna module 77, and the outer end 82a of the antenna wire 82 of the antenna module member 78. Furthermore, the antenna wire 82 of the antenna module member 78
The center side end portion 82b of the antenna module member 79 is connected to the center side end portion 83b of the antenna wire 83 of the antenna module member 79. One and the other terminal 7 of the antenna module 74
A capacitor C5 is provided between 4a and 74b.

As described above, according to the sixth and seventh embodiments, the antennas 5 are provided in the housings 71 and 73 in which the supply / reception circuit 3 and the control circuit 4 are housed. 73 is attached to the instrument panel 17. Therefore, the vehicle identification device 1 is small and the coil portion of the antenna 5 is not exposed. Therefore, the appearance is improved.

[0047]

As described above, according to the present invention, in order to identify the operator, a high frequency signal is transmitted to the response means carried by the operator, and the identification code from the response means is received. Antennas are provided on the sun visor, rearview mirror, steering wheel, windshield or shift lever. Therefore, the antenna can be formed relatively large,
Even when the antenna and the response unit are arranged relatively distant from each other, it is possible to reliably transmit the high frequency signal and receive the identification code.

Further, according to the present invention, in the housing in which the supply means and the receiving means of the vehicle identification device are housed, the antenna is provided so that the response means faces the insertion hole which can be attached / detached. A ring-shaped coil that functions as the above is provided, and such a casing is attached to an instrument panel of a vehicle so that at least the insertion hole is exposed. Therefore, the vehicle identification device becomes small, the coil portion is not exposed, and the appearance is improved.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining the operation principle of a vehicle identification device 1 according to the present invention.

FIG. 2 is a perspective view showing the interior of the vehicle body.

FIG. 3 is a perspective view showing an appearance of a vehicle 2.

FIG. 4 is a perspective view showing the sun visor 11 having the antenna wire 22 according to the first embodiment of the present invention.

5 is a second embodiment of the present invention, which is an antenna wire 33. FIG.
It is a disassembled perspective view which shows the interior mirror 12 which has.

6 is a third embodiment of the present invention, the antenna wire 4
It is a perspective view which shows the windshields 13 and 14 which have 1,42.

FIG. 7 is a front view showing a glass body 43 on which antenna wires 41 and 42 are formed.

FIG. 8 is a cross-sectional view showing a glass body 43 on which antenna wires 41 and 42 are formed.

9 is a fourth embodiment of the present invention, an antenna wire 54
It is a front view which shows the handle 15 which has.

FIG. 10 is a fifth embodiment of the present invention, in which the antenna wire 6
FIG. 6 is a perspective view showing a shift lever 16 having No. 3;

FIG. 11 is a block diagram showing an electrical configuration of a vehicle control device 101 in a vehicle in which the vehicle identification device 1 of the present invention is used.

FIG. 12 is a perspective view showing a housing 71 according to a sixth embodiment of the present invention.

13 is a block diagram showing the housing 71 and a response means 6. FIG.

FIG. 14 is a perspective view showing a housing 73 according to a seventh embodiment of the present invention.

FIG. 15 is a block diagram showing the housing 73 and a response means 6.

16 is a cross-sectional view showing a mounted state of the housing 71. FIG.

FIG. 17 is a plan view showing the configuration of an antenna module 74.

FIG. 18 is a cross-sectional view showing a configuration of a conventional vehicle key device.

FIG. 19 is a perspective view showing a configuration of an annular core 207 of the vehicle key device.

FIG. 20 is a block diagram showing an electrical configuration of the vehicle key device.

[Explanation of symbols]

1 Vehicle Identification Device 2 Vehicle 3 Supply / Reception Circuit 4 Control Circuit 5,8 Antenna 6 Response Means 7,135,140 Memory 11 Sun Visor 12 Room Mirror 13,14 Windshield 15 Handle 16 Shift Lever 17 Instrument Panel 22, 33, 41, 42, 54, 63, 80 to 83 Antenna wire 71, 73 Housing 71a, 73a Insertion hole 72 Annular coil 74 Antenna module 132 Processing circuit 136 Oscillation / detection circuit 137, 139 Coil 138 Transponder

Claims (6)

[Claims] 1. A supply means provided on the vehicle side transmits a high frequency signal, a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force by the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares the identification code with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. An identification device for a vehicle, characterized in that an antenna for receiving is provided in a sun visor. 2. A supply means provided on the vehicle side transmits a high frequency signal, a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force by the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares the identification code with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. An identification device for a vehicle, characterized in that an antenna for receiving is provided in a rearview mirror. 3. A supply means provided on the vehicle side transmits a high frequency signal, a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force by the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares the identification code with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. An identification device for a vehicle, characterized in that an antenna for receiving is provided on a steered wheel. 4. A supply means provided on the vehicle side transmits a high frequency signal, a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force by the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares the identification code with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. An identification device for a vehicle, characterized in that an antenna for receiving is provided on the windshield. 5. A supply means provided on the vehicle side transmits a high frequency signal, a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force by the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares the identification code with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the transmission of the high-frequency signal and the identification code. A vehicle identification device, characterized in that an antenna for receiving the is provided on a shift lever. 6. A supply means provided on the vehicle side transmits a high frequency signal, and a response means carried by an operator returns an identification code unique to the response means by an induced electromotive force due to the high frequency signal, and the vehicle side In the vehicle identification device, the receiving means receives the identification code, compares it with an identification code unique to the vehicle, and prohibits traveling of the vehicle when the two do not match, the supplying means and the receiving means are provided. An annular coil that is integrally housed in the housing and that allows the response means to be attached to and detached from the insertion hole formed in the housing and that acts as the antenna facing the insertion hole, at least the housing is provided. A vehicle identification device, characterized in that it is attached to an instrument panel such that the insertion hole is exposed.